BirA protein, Escherichia coli (His-MBP) is a recombinant biotin ligase expressed in Escherichia coli with N-terminal 6xHis and maltose-binding protein (MBP) tags. It catalyzes site-specific biotinylation of an Avi-tag acceptor peptide in the presence of ATP, enabling selective labeling, capture, and immobilization of target proteins for biochemical and affinity applications.
- Enables site-specific biotinylation in the presence of ATP.
- Supplied as lyophilized powder for convenient storage and transport.
- N-terminal His and MBP tags facilitate purification and improve solubility.
- Purity greater than 95% by reducing SDS-PAGE.
- Stable long-term at -20 °C; aliquot and store at -80 °C for extended stability.
- Suitable for labeling, affinity capture, and biochemical assays.